【发布时间】：2023-02-11 01:15:01
【问题描述】：
我使用的 Viewbox 的 Stretch 设置为 Uniform，以便当用户在操作系统中的屏幕分辨率和比例之间切换时不会扭曲内容。
在 Viewbox 中我有一个网格。 网格只有 1 行和一些列。
<Viewbox StretchDirection="Both"
Stretch="Uniform"
HorizontalAlignment="Left"
VerticalAlignment="Stretch">
<Grid Focusable="True"
Height="Auto">
<Grid.ColumnDefinitions>
<!-- Animated image -->
<ColumnDefinition Width="Auto" />
<!-- Stack panel with icon and text -->
<ColumnDefinition Width="Auto" />
<!-- A vertical separator -->
<ColumnDefinition Width="Auto" />
<!-- A button -->
<ColumnDefinition Width="Auto" />
<!-- Empty dummy column to help distribute space correctly between columns so it will cause next columns to be horizontally right aligned. -->
<ColumnDefinition Width="*" />
<!-- Help button -->
<ColumnDefinition Width="Auto" />
<!-- Three dots button -->
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<StackPanel Grid.Column="0"
Orientation="Horizontal"
Visibility="{Binding Path=IsAnimatedImgVisible, Converter={StaticResource BoolToVisibility}}">
<v:UserControlAnimatedImg x:Name="UcSpinner" VerticalAlignment="Center" HorizontalAlignment="Left"/>
<Label SnapsToDevicePixels="True"
RenderOptions.BitmapScalingMode="HighQuality"
VerticalAlignment="Center" HorizontalAlignment="Left"
Content="{Binding Path=StatusText}"/>
</StackPanel>
<StackPanel Grid.Column="1"
Orientation="Horizontal">
<Image
Margin="10,5"
Height="24"
Width="24"
MaxHeight="24"
MaxWidth="24"
VerticalAlignment="Center"
HorizontalAlignment="Center"
Stretch="None"
SnapsToDevicePixels="True"
RenderOptions.BitmapScalingMode="HighQuality"
Source="{Binding Path=Icon}"/>
<Label
VerticalAlignment="Center"
HorizontalAlignment="Left"
Content="{Binding Path=StatusTxt}"
SnapsToDevicePixels="True"
RenderOptions.BitmapScalingMode="HighQuality">
</Label>
</StackPanel>
<Separator Grid.Column="2"
Margin="10,5,5,5"
Height="26"
Style="{StaticResource {x:Static ToolBar.SeparatorStyleKey}}">
<Button Grid.Column="3"
Height="Auto"
Width="150"
Command="{Binding ButtonOnClick}">
<StackPanel Orientation="Horizontal">
<Image
Height="24"
Width="25"
MaxHeight="24"
MaxWidth="25"
VerticalAlignment="Center"
HorizontalAlignment="Center"
Stretch="None"
SnapsToDevicePixels="True"
RenderOptions.BitmapScalingMode="HighQuality"
Source="{Binding ImageIcon}"/>
<TextBlock
Margin="10,2,5,2"
VerticalAlignment="Center"
HorizontalAlignment="Left"
Text="{x:Static p:Resources.BtnText}"
SnapsToDevicePixels="True"
RenderOptions.BitmapScalingMode="HighQuality">
</TextBlock>
</StackPanel>
</Button>
<!-- Empty dummy space to help distribute space correctly between columns and
make next columns to be horizontally right aligned. This column will be blank
space.-->
<ContentControl Grid.Column="4"/>
<Button
Grid.Column="5"
Height="25"
Width="25"
MaxHeight="25"
MaxWidth="25"
Margin="8,0,5,0"
Style="{StaticResource {x:Static ToolBar.ButtonStyleKey}}"
Command="{Binding BtnHlpClick}">
<Image HorizontalAlignment="Center"
VerticalAlignment="Center"
Stretch="Uniform"
SnapsToDevicePixels="True"
RenderOptions.BitmapScalingMode="HighQuality"
Source="{Binding ImageHelpIcon}"/>
</Button>
<StackPanel Grid.Column="6"
x:Name="PlaceHolder"
VerticalAlignment="Center"
Margin="2,0,12,0"
Width="27"
Height="Auto">
<Image
HorizontalAlignment="Center"
VerticalAlignment="Center"
Stretch="Uniform"
Height="20"
Width="20"
SnapsToDevicePixels="True"
RenderOptions.BitmapScalingMode="HighQuality"
Source="{Binding ImgThreeDotsIcon}">
<Image.ContextMenu>
<ContextMenu Placement="Bottom" Background="#FFFFFF">
<MenuItem Header="{x:Static p:Resources.mnutext}" Command="{Binding MenuOnClick}"></MenuItem>
</ContextMenu>
</Image.ContextMenu>
</Image>
</StackPanel>
</Viewbox>
第一列是否显示取决于条件。在这里，我将仅向您展示第一列不可见的用例。
以上代码产生以下结果（第一列不可见）：
而我想要的，预期的结果是：
我希望最后两列（5 和 6）水平对齐到最右边，并在第 3 列和第 5 列之间有一个额外的空白空间。请注意，第 4 列用作虚拟列来制作这个额外的空白区域，其宽度设置为列定义中的“*”。
我怎样才能得到预期的结果？如果我删除 Viewbox，那么我会得到预期的结果，但我想在添加 Viewbox 的情况下获得相同的结果。我需要 viewbox 作为根，我不想删除它，因为使用它我使内容独立于屏幕分辨率和缩放（Viewbox 自动执行）。
【问题讨论】：
标签： c# wpf xaml .net-4.5 viewbox